D/ldc
1
0
Fork 0
mirror of https://github.com/xomboverlord/ldc.git synced 2026-08-02 04:20:05 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix real comparison for real: allow +0 to be distinguished from -0.

Browse Source
This commit is contained in:
Christian Kamm
2008-07-28 21:37:47 +02:00
parent cf4565095c
commit d9f85de2a1
1 changed files with 6 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
dmd/expression.c
View File

@@ -1494,11 +1494,12 @@ complex_t RealExp::toComplex()
int RealEquals(real_t x1, real_t x2) int RealEquals(real_t x1, real_t x2)
{ {
return (isnan(x1) && isnan(x2)) || return // special case nans
/* In some cases, the REALPAD bytes get garbage in them, (isnan(x1) && isnan(x2)) ||
* so be sure and ignore them. // and zero, in order to distinguish +0 from -0
*/ (x1 == 0 && x2 == 0 && 1./x1 == 1./x2) ||
x1 == x2; // otherwise just compare
(x1 != 0. && x1 == x2);
} }
int RealExp::equals(Object *o) int RealExp::equals(Object *o)